TDK Corporation expanded its ADL4524VL series of wire-wound inductors for automotive power-over-coax applications. The inductors measure 4.5 x 2.4 x 2.6 mm and entered mass production in July 2025.Automotive PoC technology enables a single coaxial cable to carry both power and data simultaneously. PoC is used in automotive camera systems as ADAS becomes more widespread. Using one coaxial cable for power and signal reduces vehicle weight by reducing cabling, improving fuel and power consumption. Simplified cabling allows more effective use of vehicle space.
PoC systems require filters incorporating multiple inductors to separate power from data signals before processing. The ADL4524VL series enables impedance across a frequency range from 10 MHz to 1 GHz using proprietary materials and structural design. This reduces the number of inductors required to save space. By covering a wide frequency range, applications can use fewer inductors. Conventional solutions requiring three inductors can use one inductor with this solution. The inductor operates at temperatures up to +155°C.
TDK continues developing inductors for automotive PoC applications by pursuing design optimization through multilayer, wire-wound, and thin-film technologies to address market needs. TDK will expand its product lineup to improve PoC transmission signal quality.
The ADL4524VL series provides impedance characteristics beyond 1 GHz frequency range and reduces footprint through fewer PoC filter inductors. The inductors operate across a temperature range from -55°C to +155°C for automotive camera PoC circuits.
